121111200012220 has 96 divisors (see below), whose sum is σ = 287904407519232. Its totient is φ = 42396636480000.

The previous prime is 121111200012197. The next prime is 121111200012233. The reversal of 121111200012220 is 22210002111121.

It is a junction number, because it is equal to n+sod(n) for n = 121111200012194 and 121111200012203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45184921 + ... + 47790160.

It is an arithmetic number, because the mean of its divisors is an integer number (2999004244992).

Almost surely, 2^{121111200012220} is an apocalyptic number.

121111200012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111200012220 is an abundant number, since it is smaller than the sum of its proper divisors (166793207507012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121111200012220 is a wasteful number, since it uses less digits than its factorization.

121111200012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92975323 (or 92975321 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121111200012220 its reverse (22210002111121), we get a palindrome (143321202123341).

The spelling of 121111200012220 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred million, twelve thousand, two hundred twenty".